CN209870542U - Hinge reinforcing plate for aluminum alloy engine cover of passenger vehicle - Google Patents
Hinge reinforcing plate for aluminum alloy engine cover of passenger vehicle Download PDFInfo
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- CN209870542U CN209870542U CN201920358037.XU CN201920358037U CN209870542U CN 209870542 U CN209870542 U CN 209870542U CN 201920358037 U CN201920358037 U CN 201920358037U CN 209870542 U CN209870542 U CN 209870542U
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Abstract
The utility model belongs to the technical field of automobile covering parts, in particular to a hinge reinforcing plate of an aluminum alloy engine cover of a passenger car; the engine hood inner panel adhesive bonding device comprises a main adhesive bonding surface connected with a hinge mounting surface on an engine hood inner panel, wherein the main adhesive bonding surface extends towards the front end, the rear end, the outer side and the inner side of the engine hood inner panel along the hinge mounting surface to form a front adhesive bonding surface, a rear adhesive bonding surface, an outer adhesive bonding surface and an inner adhesive bonding surface which are connected with the engine hood inner panel; the main bonding surface is provided with a press riveting nut for hinge installation, and the main bonding surface, the front bonding surface, the rear bonding surface and the inner bonding surface are provided with self-punching riveting points; can realize falling heavily when solving the not enough problem of hinge mounting point intensity, strengthen the collision energy-absorbing effect, reach better pedestrian protection effect.
Description
Technical Field
The utility model belongs to the technical field of the automobile panel, concretely relates to passenger car aluminum alloy engine hood hinge reinforcing plate.
Background
The engine hood is an important assembly in an automobile covering part, and is required to have light weight, strong collision energy absorption capacity and good pedestrian protection effect besides appearance requirements and rigidity requirements. The hinge is a structure for realizing the opening and closing of the engine hood, and provides a mounting point for the hinge mounting plate which is positioned between the inner plate of the hair hood and the outer plate of the hair hood. The hinge reinforcing plate plays an important role in ensuring the strength of a hinge mounting point and improving the torsion and transverse rigidity of the engine cover.
Due to the complex driving road condition of the passenger car, the engine hood can vibrate, twist, move forwards, move transversely and even collide in the driving process, and the requirement on the strength of the hinge mounting point of the engine hood is high. If the strength of the hinge mounting point is insufficient, the hinge can be separated from the engine hood, and serious accidents can be caused. Meanwhile, in order to be beneficial to pedestrian protection, requirements are also provided for collision energy absorption at the hinge mounting position of the engine hood.
The prior technical scheme has the following problems: firstly, the steel hinge reinforcing plate is heavy in weight; the common structure is a relatively simple slender planarization structure, the contact area of the structure and the inner plate of the hair cover is small, the number of connectable parts is small, the stress direction of the connecting part is single, and the failure problems such as separation and the like are easy to occur in the face of complex working conditions; thirdly, the slender planarization structure is not beneficial to energy absorption in collision, and damage and pedestrian protection can be caused in collision; and fourthly, the general welding technology used for connecting the steel hair cover is used for welding the aluminum thin plate, so that the problems of connection strength reduction, hair cover inner plate size deformation and the like caused by thin plate welding penetration, thin plate thermal deformation and the like are easily generated.
Density of aluminum alloy sheet2700kg/m3And the density of the steel plate is only 35%, and meanwhile, the specific strength of the aluminum alloy plate is higher, so that the engine cover made of the aluminum alloy can better reduce the weight greatly compared with a steel engine cover, the collision energy absorption effect is improved, and the pedestrian protection is facilitated.
The common automobile panel aluminum alloy inner and outer plate materials are usually 6xxx series, 5xxx series and other two series, wherein the 5xxx aluminum alloy improves the strength and the formability through high Mg element content, and has wide application, but the 5xxx aluminum alloy is a non-heat-treatable strengthened alloy, has high initial yield strength, and has the formability which is not as good as that of the 6xxx aluminum alloy. The 6xxx aluminum alloy has excellent strength, formability, corrosion resistance, folding performance and high surface quality, and is particularly suitable for a covering component assembly with high impact resistance, such as a hair cover. The characteristic that the bake hardenability is low in yield strength during processing and the yield strength is improved due to the high temperature of baking and coating is just matched with the production process of the engine hood, the lower yield strength enables the engine hood to be easier to form during stamping, the yield strength is greatly improved after the assembly is baked during coating, and the overall strength and the impact resistance of the engine hood assembly are improved.
Because the aluminum alloy sheet has large thermal expansion coefficient and small elastic modulus, welding with large heat input quantity is easy to cause the condition of falling or welding through of a molten pool, and meanwhile, wave deformation which is difficult to correct is easy to generate, thus seriously influencing the manufacturing precision and the service performance of the structure. Therefore, for the connection process of the aluminum alloy engine hood, the welding process of the steel engine hood cannot be directly adopted except for mastering related advanced welding patent technologies.
Self-piercing riveting is a cold joining technique used to join two or more metal sheets. After the rivet penetrates through the top layer of the plate, the hollow structure at the tail part of the rivet is expanded and penetrated into the bottom layer of the plate without penetrating through the bottom layer of the plate under the action of the riveting die, so that a firm riveting point is formed. The riveting point of the self-piercing riveting is firm and reliable, the riveting quality is stable, the connecting area has no thermal stress concentration, the sheet basically has no deformation after riveting, and the size precision is high.
Bonding is a process of firmly joining together materials of the same or different kinds by means of the adhesive force generated by an adhesive on a solid surface. The metal sheets are bonded together, so that the stress distribution is more uniform, different pressure flow viscosities enable the bonding to play different roles such as vibration reduction, sealing, edge folding and the like, the common adhesive is a polyurethane adhesive, but the bonding strength of the polyurethane adhesive is general, and the failure of a component system can occur when the general temperature is higher than 120 ℃, so that the bonding strength is completely lost, and the adhesive is not suitable for the high-temperature condition of coating at about 180 ℃. The adhesive for edge folding is generally used for structural connection, and generally adopts an epoxy resin type adhesive which can adapt to the high temperature condition below 200 ℃. The adhesive for vibration reduction is also used for structural connection, generally adopts rubber and foaming type adhesive, has general connection strength, but can realize good energy absorption and vibration reduction effects due to the nonlinear vibration reduction characteristic of the rubber.
Disclosure of Invention
In order to overcome the problem, the utility model provides a passenger car aluminum alloy engine cover hinge reinforcing plate can realize falling heavily when solving the not enough problem of hinge mounting point intensity, strengthens the collision energy-absorbing effect, reaches better pedestrian's protection effect.
A passenger car aluminum alloy engine hood hinge reinforcing plate comprises a main bonding surface 1 connected with a hinge mounting surface on an engine hood inner plate 8, wherein the main bonding surface 1 extends towards the front end, the rear end, the outer side and the inner side of the engine hood inner plate 8 along the hinge mounting surface to form a front bonding surface 2, a rear bonding surface 3, an outer bonding surface 4 and an inner bonding surface 5 which are connected with the engine hood inner plate 8; the main bonding surface 1 is provided with a press riveting nut 6 for hinge installation, and the main bonding surface 1, the front bonding surface 2, the rear bonding surface 3 and the inner bonding surface 5 are provided with self-punching riveting points 7.
Damping glue is arranged on the main bonding surface 1, the front bonding surface 2, the rear bonding surface 3, the outer bonding surface 4 and the inner bonding surface 5, and the damping glue is uniformly coated on the edges of the bonding surfaces in a strip shape.
The vibration damping adhesive is a rubber foaming agent compound adhesive.
The utility model has the advantages that:
the hinge reinforcing plate of the engine cover of the passenger car is of a three-dimensional structure, can realize gradual crushing during collision, effectively increases the collision energy absorption effect, and is more favorable for protecting pedestrians; meanwhile, the number of bonding surfaces at different angles between the reinforcing plate and the hair cover inner plate is increased, connectable parts are increased, the connection strength is increased, and the provided connecting force in different directions is more beneficial to coping with various complex working conditions; and the aluminum sheet is connected with the hair hood inner plate in a composite connection mode of bonding and self-piercing riveting, so that the problems of connection strength reduction, size deformation of the hinge reinforcing plate and the like caused by sheet welding penetration, sheet thermal deformation and the like in the spot welding of the aluminum sheet in the prior art are effectively solved, and the connection strength of the hinge reinforcing plate and the hair hood inner plate is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is an installation schematic diagram of the present invention.
Fig. 4 is a schematic view of the installation part of the present invention.
Wherein: the automobile hood comprises a main bonding surface 1, a front bonding surface 2, a rear bonding surface 3, an outer bonding surface 4, an inner bonding surface 5, a press rivet nut 6, a self-punching rivet joint 7 and an engine hood inner plate 8.
Detailed Description
The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 and 2, the aluminum alloy engine hood hinge reinforcing plate for the passenger vehicle comprises a main bonding surface 1 connected with a hinge mounting surface on an engine hood inner plate 8, wherein as shown in fig. 3 and 4, the main bonding surface 1 extends towards the front end, the rear end, the outer side and the inner side of the engine hood inner plate 8 along the hinge mounting surface to form a front bonding surface 2, a rear bonding surface 3, an outer bonding surface 4 and an inner bonding surface 5 connected with the engine hood inner plate 8; the main bonding surface 1 is provided with a press riveting nut 6 for hinge installation, and the main bonding surface 1, the front bonding surface 2, the rear bonding surface 3 and the inner bonding surface 5 are provided with self-punching riveting points 7.
Damping glue is arranged on the main bonding surface 1, the front bonding surface 2, the rear bonding surface 3, the outer bonding surface 4 and the inner bonding surface 5, and the damping glue is uniformly coated on the edges of the bonding surfaces in a strip shape.
The vibration damping adhesive is a rubber foaming agent compound adhesive.
Except that the bonding mode, the utility model discloses still be connected with engine bonnet inner panel 8 through the riveting of dashing certainly.
By adopting the technical scheme, the problem that the strength of the mounting point of the engine hood hinge is insufficient is solved, and meanwhile, on the premise that the basic rigidity is met, the rigidity is reduced through structural weakening, the collision injury is reduced, and the pedestrian protection is facilitated.
The damping adhesive is T-3216 adhesive, and the pressure flow viscosity of the adhesive is 47 g/min.
The self-piercing rivet is a self-piercing rivet with a pin foot diameter of 3.3mm and a pin length of 4.5mm, the riveting pressure is 50/150/100bar, wherein the pressing pressure is 50bar, the piercing pressure is 150bar, the shaping pressure is 100bar, and the pressure maintaining time is 2 s.
The aluminum alloy plate with the thickness of 1.5mm and the mark of AA5754 comprises the following components: < 0.40%, Fe: < 0.40%, Cu: < 0.10%, Mn: < 0.50%, Mg: 2.6-3.6%, Al: the balance, yield strength 116MPa, tensile strength 221MPa, elongation 21.5%, n value 0.26, r value 0.63.
The actual weight of the embodiment is 0.04kg, and compared with the weight of 0.41kg in the prior art, the weight is reduced by 90.2%.
This embodiment adopts the maximum connecting force of riveting compound connection technology to be 2380N, compares single riveted connection technology, and the maximum connecting force has promoted 14.6%, compares single welding, and the maximum connecting force has promoted 39.7%.
Claims (2)
1. A passenger car aluminum alloy engine hood hinge reinforcing plate is characterized by comprising a main bonding surface (1) connected with a hinge mounting surface on an engine hood inner plate (8), wherein the main bonding surface (1) extends towards the front end, the rear end, the outer side and the inner side of the engine hood inner plate (8) along the hinge mounting surface to form a front bonding surface (2), a rear bonding surface (3), an outer bonding surface (4) and an inner bonding surface (5) which are connected with the engine hood inner plate (8); the main bonding surface (1) is provided with a press rivet nut (6) for mounting a hinge, and the main bonding surface (1), the front bonding surface (2), the rear bonding surface (3) and the inner bonding surface (5) are all provided with self-punching rivet joints (7).
2. The aluminum alloy engine hood hinge reinforcing plate for the passenger vehicle as claimed in claim 1, wherein the main bonding surface (1), the front bonding surface (2), the rear bonding surface (3), the outer bonding surface (4) and the inner bonding surface (5) are provided with damping glue, and the damping glue is uniformly coated on the edges of the bonding surfaces in a strip shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358037.XU CN209870542U (en) | 2019-03-20 | 2019-03-20 | Hinge reinforcing plate for aluminum alloy engine cover of passenger vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920358037.XU CN209870542U (en) | 2019-03-20 | 2019-03-20 | Hinge reinforcing plate for aluminum alloy engine cover of passenger vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209870542U true CN209870542U (en) | 2019-12-31 |
Family
ID=68955828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920358037.XU Active CN209870542U (en) | 2019-03-20 | 2019-03-20 | Hinge reinforcing plate for aluminum alloy engine cover of passenger vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209870542U (en) |
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2019
- 2019-03-20 CN CN201920358037.XU patent/CN209870542U/en active Active
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